Ruttya fruticosa.jpeg.jpg Ruellia maya.jpg Ruellia breedlovei_photo by R. Freyre.jpg Eranthemum nervosum.jpg Ruellia strepens_non-resupinate flowers2.jpg Ruellia petiolaris_photo by V. Steinman.jpg Ruellia inundata.jpg

Acanth Fact of the Day

A major clade within Acanthaceae is the cystolith clade. Cystoliths are anatomical structures found in leaves and are thought to be composed of calcium carbonate or calcium oxalate. Their function is unknown.
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